Roofing element



Dec. 8, 1931. F. c. OVERBURY ROOFING ELEMENT Filed May 12, 1928 INVENTORfiederz'cii 6. Ovezzzzy BY 1M 1% ATTORNEY Patented Dec. 3, 1931 UNITEDSTATES PATENT OFFICE FREDERICK C. OVEBBURY, HILLSDALE NEW JERSEY,ASSIGNOB, BY MESNE ASSIGN- MENTS, TO THE P ATENT AND LICENSINGCORPORATION, 015 BOSTON, MASSACHU- SETTS, A CORPORATION OF MASSACHUSETTSROOFING ELEMENT Application men a 12,

My invention relates to roofing and has more particular relation toflexible roofing elements made of asphalt saturated and coated andmineral surfaced roofing felt.

The principal object of my invention is to provide, in a shingle of thisgeneral type,

means for securely holding down the weath-' er exposed portion of eachshingle upon the surfaces of the underlying shinglesso as to precludethe blowin up or curling of the exposed portions and the beating in ofram or snow beneath the shingles.

It is an important object of my invention also to provide a shingle ofthis character having'means for thus holding it in proper position onthe roof, and constructed in such a way as to permit free movement ofthe fastened portion of the shingle durlng the movements' accompanyingexpansion and contrac- 2 tion of the sub-structure.

In accordance with my invention, I form the shingle with a folded under'corner adapted to underlie the main body portlon of the shingle when inplace on a roof, and arran ed :5 for the ready application thereto of aastening device which serves to securely clamp the underturned corner inposition and thereby effectively retain the exposed portion of theshingle in flatwise position over its sub-' jacent companion shingles.Further, in accordance with my present invention, the underturned cornerof the shingle is formed with notches in its marginal edges arranged toaccommodate the fastening device, which may be of any suitable metal,and which, when in position is totally concealed by the over lyingmainbody portion of the shingle.

In the accompanying drawings I have illustrated several embodiments ofmy invention. In these drawings,

Figure 1 shows a section of roofing laid u with shingles constructed inaccordance with my invention,

Figure 2 isa face or plan view 'ofa single shingle of my presentinvention,

Figure 3 is a detail, showing the location of the fastening devicewhen'in operative position,

Figure 4 is a fragmentary view showing 1928. Serial in. 277,133.

several shingles laid up witha modified form of fastening device,

. Figure 5 is a detail in perspective of the form of fastening shown inuse in Fi re 4, Figure 6 illustrates one mode in wh1ch the shingles ofmy invention'may be cut from a sheet of roofing felt.

Referring more in detail to Fi res 1, 2, and 3, the numeral 11 indicatesan individual shingle preferably formed, as shown, of rectangularconfiguration and havin one of its corner portions, as at 12, adapter?for retroversion along the line 13 so as to underlie the main bodyportion of the shingle, the shin le thus presenting a folded edge ofconsidera le thickness contributing to the enhancement of the shadowelfects so desirable in this type of roof. The operation of folding thecorner portion 12 beneath the main body of the shingle will preferablybe performed after the shingle has been severed from the finished sheetof roofing. This operation may be carried out in a very simple manner bythe application of heat to the shingle in the region of the line offold, and when the material in this region has been thus renderedsufiiciently pliable for the purpose, any suitable mechanism may beemployed for applying the bending force necessary to form the fold,whereupon the shingle may be allowed to cool so as to regain its normalflexibility with the flap 12 in its retroverted position. Numerousschemes havebeen proposed for retaining in proper position on a roof 9.shingle having an underfolded flap as just described, but these haveeither proved ina secure or they have resulted in clamping or holdingthe flap so fixedly as to cause the shingle to bulge and buckle due toinsuflicient compensative movement during expansion and contraction ofthe sub-structure.

By my invention I overcome the foregoing difiicultles in that my shingleis at all times effectively secured against being blown up by wind andyet is capable of slight movement to accommodate itself to the expandingand contracting movements of the roof structure. This I accomplish byforming in the marginal edges of the flap 12, notches 14 which arepreferably more or less elongated in the general direction of thesemarginal edges. As shown, the notches 14 are of rectangular conhave oneof their extremities terminated as at 15 a short distance from theextremity of this corner portion of the shingle. The oppositeextremities 16 of the notches terminate a short distance outwardly ofthe line of fold 13.

In conjunction with each shingle constructed as thus far described, Iemploy a fastening device which, as shown in Figures 1 and 3, maycomprise a U-shaped member 18, the bridge portion ofwhich-is adapted tostraddle and overlie the underfolded flap of the shingle and to have itsprongs or driving members 19, accommodated for free play within themarginal notches 14' thereof. Manifestly the inclination of the sides ofthe notches should be such that the prongs of the fastening device willbe confined at all times within the notches, so that the flap cannot bedislodged from beneath the bridging portion of the fastener.

If desired the edges 16 of the notches may extend inwardly into the mainpart of the flap 12 a greater distance than do the edges 15 so as toform a saw tooth notch which may in some instances be desirable.

It will be understood, ofcourse, that in applying these shingles to aroof, the shingles of each course are laid with the retroverted flapthereof arranged between converging lateral edges of a pair of shinglesin the preceding course, and when the flap has been adjusted to properposition, the fastening device may then be driven into place. The mainbody of the shingle, as will be apparent, overlies the flap and itsassociated fastening device and thus conceals the latter and protectsit' against rapid deterioration.

In some instances I may use a modified form of fastening member asillustrated in Figures 4and 5. As here shown, the-bridging portion ofthe fastening member 18-a is formed with a central extension. 186 in theshape of a U, and in thesa'me horizontal plane with the endportions'ofthe bridge of this fastening device. When applied, this particular formof fastener 'is adapted to have its extension 18b bearing upon the uppersurface of the underfolded flap of its associated shingle to therebyfurther resist displacement of the latter. v

In Figure 6 I have shown one way in which the shingles of my presentinvention may be cut from a sheet of roofing base, as for example thewell-known saturated and coated and mineral surfaced roofing. As hereillustrated, the sheet of roofing base A travelling through the cuttingmechanism in the direction indicated by the arrow, may be severedcentrally along the longitudinal line 21 and similarly cut alongtransverse lines 22.

Near thepoint of intersection 23 of the longitudinalcut 21 withalternate ones ofthe transverse cuts 22 the sheet may have cut orpunched therefrom rectangular openings 24, spaced as shown from thepoint of intersection 23 and arranged symmetrically with respect theretoand also-with respect to the cuts Letters Patent, is

1. A shingle of the character described, having one of its cornersadapted for retroversion, the converging edges of said corner having.notches therein for the accommodation of a securing device, each of saidnotches having one of its extremities spaced from the line ofretroversion of said corner and a laterally extending shoulder at itsopposite extremlty. Y

2. A shingle of the character described,

havin onepf its corners folded beneath the main ody portion thereof, theconverging edges of said under folded corner having notches therein.adapted to accommodate a securing member for holding said corner inretroverted position on a roof, said notches being elongated inthegeneral direction of said edges and having the lower extremitiesthereof spaced from the line of fold of said corner. v

3. A shingle'of the character described, comprising a main body portionand a retroverted tab formed at one corner of the body portion, said tabbeing formed with elongated openings terminating u wardly of'the line ofret'roversion'of said ta when the latter is in retroverted position,said openings being formed with spaced abutments and being arranged toaccommodate the prongs of a securing device and to confine said tab inretroverted position when the shingle is laid with others on a roof.

FREDERICK O. OVERBURY.

